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Oxidative Coupling of Quinones and Aromatic Compounds by Palladium(II) Acetate
Itahara, Toshio
, p. 5546 - 5550 (2007/10/02)
The oxidation of 1,4-benzoquinone, 2-phenyl-1,4-benzoquinone, 1,4-naphthoquinone, and 1,2-naphthoquinone by palladium(II) acetate in acetic acid containing arenes gave the corresponding aryl-sustituted quinones.Treatment of 1,4-naphthoquinone with aromatic heterocycles such as furfural, 2-acetylfuran, methyl 2-furoate, 2-acetylthiophene, 1-(phenylsulfonyl)pyrrole, 1-(phenylsulfonyl)indole, 4-pyrone, and 1-methyl-2-pyridone in the presence of palladium acetate gave the corresponding 2-heteroaryl-substituted 1,4-naphthoquinones.
